Install Nylon Rope
Insert one of the ends of the nylon rope through the hole on the tab of the roller plate. The tab has two holes, 3mm⌀. I used a pair of tweezers to push and pull the rope through the hole.
To prevent the strands from fraying, use a heat air gun or lighter to melt the tip. The molten strands can be formed into a rivet. Optionally tie a knot to secure the rope to the roller plate.
Secure Roller to Arm
Align the roller carriage and arm together. Use two M3 x 8mm button head metric machine screws to secure the roller plate to the arm. Place the roller plate over the arm and line up the mounting holes.